EP3503130A4 - R-t-b sintered magnet - Google Patents

R-t-b sintered magnet Download PDF

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Publication number
EP3503130A4
EP3503130A4 EP17841486.8A EP17841486A EP3503130A4 EP 3503130 A4 EP3503130 A4 EP 3503130A4 EP 17841486 A EP17841486 A EP 17841486A EP 3503130 A4 EP3503130 A4 EP 3503130A4
Authority
EP
European Patent Office
Prior art keywords
sintered magnet
sintered
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17841486.8A
Other languages
German (de)
French (fr)
Other versions
EP3503130A1 (en
EP3503130B1 (en
Inventor
Futoshi Kuniyoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of EP3503130A1 publication Critical patent/EP3503130A1/en
Publication of EP3503130A4 publication Critical patent/EP3503130A4/en
Application granted granted Critical
Publication of EP3503130B1 publication Critical patent/EP3503130B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/45—Rare earth metals, i.e. Sc, Y, Lanthanides (57-71)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0266—Moulding; Pressing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
EP17841486.8A 2016-08-17 2017-08-14 R-t-b sintered magnet Active EP3503130B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2016159913 2016-08-17
JP2017015396 2017-01-31
PCT/JP2017/029270 WO2018034264A1 (en) 2016-08-17 2017-08-14 R-t-b sintered magnet

Publications (3)

Publication Number Publication Date
EP3503130A1 EP3503130A1 (en) 2019-06-26
EP3503130A4 true EP3503130A4 (en) 2020-03-18
EP3503130B1 EP3503130B1 (en) 2024-06-05

Family

ID=61196728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17841486.8A Active EP3503130B1 (en) 2016-08-17 2017-08-14 R-t-b sintered magnet

Country Status (5)

Country Link
US (1) US11174537B2 (en)
EP (1) EP3503130B1 (en)
JP (1) JP6501038B2 (en)
CN (1) CN109478452B (en)
WO (1) WO2018034264A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10643789B2 (en) 2017-01-31 2020-05-05 Hitachi Metals, Ltd. Method for producing R-T-B sintered magnet
EP3579257A4 (en) * 2017-01-31 2020-02-19 Hitachi Metals, Ltd. Method for producing r-t-b sintered magnet
JP7310499B2 (en) * 2019-01-28 2023-07-19 株式会社プロテリアル Method for producing RTB based sintered magnet
JP2020120102A (en) * 2019-01-28 2020-08-06 日立金属株式会社 Method for manufacturing r-t-b based sintered magnet
JP7387992B2 (en) * 2019-03-20 2023-11-29 Tdk株式会社 RTB series permanent magnet
JP7367428B2 (en) * 2019-03-25 2023-10-24 株式会社プロテリアル RTB system sintered magnet
US11239011B2 (en) * 2019-03-25 2022-02-01 Hitachi Metals, Ltd. Sintered R-T-B based magnet
CN110571007B (en) * 2019-09-03 2021-06-11 厦门钨业股份有限公司 Rare earth permanent magnet material, raw material composition, preparation method, application and motor
JP7447606B2 (en) 2019-09-27 2024-03-12 株式会社プロテリアル RTB system sintered magnet
CN110957091B (en) * 2019-11-21 2021-07-13 厦门钨业股份有限公司 Neodymium-iron-boron magnet material, raw material composition, preparation method and application
JP7243609B2 (en) * 2019-12-13 2023-03-22 信越化学工業株式会社 rare earth sintered magnet
CN110957092B (en) * 2019-12-19 2021-06-11 厦门钨业股份有限公司 R-T-B series magnet material, raw material composition, preparation method and application
CN110957093B (en) * 2019-12-19 2021-06-11 厦门钨业股份有限公司 R-T-B series magnet material, raw material composition, preparation method and application
CN111243808B (en) * 2020-02-29 2022-02-01 厦门钨业股份有限公司 Neodymium-iron-boron material and preparation method and application thereof
JP7452159B2 (en) 2020-03-24 2024-03-19 株式会社プロテリアル Manufacturing method of RTB based sintered magnet
CN113096947B (en) * 2020-07-06 2023-02-10 烟台首钢磁性材料股份有限公司 Preparation method and microstructure of high-performance neodymium iron boron sintered magnet
CN116368585B (en) * 2020-09-23 2024-01-05 株式会社博迈立铖 R-T-B sintered magnet
CN112735717B (en) * 2020-12-25 2023-08-01 福建省长汀金龙稀土有限公司 Neodymium-iron-boron material and preparation method thereof
CN113571279B (en) * 2021-07-23 2024-05-03 包头天和磁材科技股份有限公司 Magnet and method for manufacturing the same
CN115714054A (en) * 2022-12-06 2023-02-24 浙江英洛华磁业有限公司 Mg-containing high-performance neodymium iron boron magnet and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3330984A1 (en) * 2015-07-30 2018-06-06 Hitachi Metals, Ltd. Method for producing r-t-b system sintered magnet

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
JPH09129424A (en) * 1995-10-30 1997-05-16 Seiko Epson Corp Magnetic powder for permanent magnet, permanent magnet, and manufacture thereof
HUE025146T2 (en) * 2007-09-04 2016-01-28 Hitachi Metals Ltd R-fe-b anisotropic sintered magnet
JP2012015168A (en) * 2010-06-29 2012-01-19 Showa Denko Kk R-t-b-based rare earth permanent magnet, motor, vehicle, generator and wind power generator
CA2811451C (en) * 2010-09-15 2016-11-01 Toyota Jidosha Kabushiki Kaisha Production method of rare earth magnet
CN103329220B (en) * 2011-01-19 2016-08-24 日立金属株式会社 R-t-b based sintered magnet
JP5572673B2 (en) 2011-07-08 2014-08-13 昭和電工株式会社 R-T-B system rare earth sintered magnet alloy, R-T-B system rare earth sintered magnet alloy manufacturing method, R-T-B system rare earth sintered magnet alloy material, R-T-B system rare earth Sintered magnet, method for producing RTB-based rare earth sintered magnet, and motor
JP6221233B2 (en) * 2012-12-28 2017-11-01 日立金属株式会社 R-T-B system sintered magnet and manufacturing method thereof
CN105431915B (en) * 2013-08-09 2018-05-08 Tdk株式会社 R-T-B systems sintered magnet and motor
CN106716571B (en) * 2014-09-17 2018-10-19 日立金属株式会社 The manufacturing method of R-T-B based sintered magnets
US20180025819A1 (en) * 2015-02-18 2018-01-25 Hitachi Metals, Ltd. Method for producing r-t-b system sintered magnet
US10273559B2 (en) * 2015-06-17 2019-04-30 Best Process Solutions, Inc. Metal recovery system and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3330984A1 (en) * 2015-07-30 2018-06-06 Hitachi Metals, Ltd. Method for producing r-t-b system sintered magnet

Also Published As

Publication number Publication date
CN109478452A (en) 2019-03-15
JPWO2018034264A1 (en) 2018-08-30
JP6501038B2 (en) 2019-04-17
EP3503130A1 (en) 2019-06-26
US11174537B2 (en) 2021-11-16
EP3503130B1 (en) 2024-06-05
WO2018034264A1 (en) 2018-02-22
US20190185971A1 (en) 2019-06-20
CN109478452B (en) 2020-06-16

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